package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
@Slf4j
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {

    @Autowired
    private DishService dishService;

    @Autowired
    private SetmealService setmealService;

    @Override
    public void delete(Long categoryId) {

        LambdaQueryWrapper<Dish> dishLqw = new LambdaQueryWrapper<>();
        dishLqw.eq(Dish::getCategoryId,categoryId);
        int dishCount = dishService.count(dishLqw);
        if (dishCount > 0){
//            不能删有产品关联
            log.info("有产品相关联,无法删除");
            throw new CustomException("有产品相关联,无法删除");
        }

        LambdaQueryWrapper<Setmeal> setmealLqw = new LambdaQueryWrapper<>();
        setmealLqw.eq(Setmeal::getCategoryId,categoryId);
        int setmealCount = setmealService.count(setmealLqw);
        if (setmealCount > 0){
            //            不能删有套餐关联
            log.info("有套餐相关联,无法删除");
            throw new CustomException("有套餐相关联,无法删除");
        }
        log.info("删除成功");
        removeById(categoryId);

    }
}
